Mandal, Mahadeb, et al. “Chronic Low Back Pain – Its Association With Lumbar Spinal Canal Diameter – a Cross-Sectional Hospital-Based Study in a Tertiary Care Hospital in North Bengal”. Asian Journal of Medical Sciences, vol. 13, no. 6, June 2022, pp. 158-62, https://nepjol.info/index.php/AJMS/article/view/43637.